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renderer-egl: Add method to render buffer as texture

pts-frame-sched
Andri Yngvason 2023-10-01 17:29:51 +00:00
parent 5f492da3d1
commit 45486f7060
2 changed files with 82 additions and 0 deletions
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2
include/renderer-egl.h
View File

@ -11,4 +11,6 @@ void render_image_egl(struct buffer* dst, const struct image* src, double scale,
int pos_x, int pos_y); int pos_x, int pos_y);
void render_av_frames_egl(struct buffer* dst, struct vnc_av_frame** src, void render_av_frames_egl(struct buffer* dst, struct vnc_av_frame** src,
int n_av_frames, double scale, int x_pos, int y_pos); int n_av_frames, double scale, int x_pos, int y_pos);
void render_buffer_egl(struct buffer* dst, const struct buffer* src,
double scale, int x_pos, int y_pos);

80
src/renderer-egl.c
View File

@ -374,6 +374,47 @@ static GLuint texture_from_av_frame(const struct AVFrame* frame)
return tex; return tex;
} }
static GLuint texture_from_buffer(const struct buffer* buffer)
{
int index = 0;
EGLint attr[128];
append_attr(attr, &index, EGL_WIDTH, buffer->width);
append_attr(attr, &index, EGL_HEIGHT, buffer->height);
append_attr(attr, &index, EGL_LINUX_DRM_FOURCC_EXT, buffer->format);
append_attr(attr, &index, EGL_IMAGE_PRESERVED_KHR, EGL_TRUE);
struct gbm_bo* bo = buffer->bo;
int fd = gbm_bo_get_fd(bo);
append_attr(attr, &index, plane_fd_key(0), fd);
append_attr(attr, &index, plane_offset_key(0), gbm_bo_get_offset(bo, 0));
append_attr(attr, &index, plane_pitch_key(0), gbm_bo_get_stride(bo));
uint64_t mod = gbm_bo_get_modifier(buffer->bo);
append_attr(attr, &index, plane_modifier_lo_key(0), mod & UINT32_MAX);
append_attr(attr, &index, plane_modifier_hi_key(0), mod >> 32);
attr[index++] = EGL_NONE;
EGLImageKHR image = eglCreateImageKHR(egl_display, EGL_NO_CONTEXT,
EGL_LINUX_DMA_BUF_EXT, NULL, attr);
assert(image != EGL_NO_IMAGE_KHR);
GLuint tex = 0;
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_EXTERNAL_OES, tex);
glEGLImageTargetTexture2DOES(GL_TEXTURE_EXTERNAL_OES, image);
eglDestroyImageKHR(egl_display, image);
glBindTexture(GL_TEXTURE_EXTERNAL_OES, 0);
close(fd);
return tex;
}
void gl_draw(void) void gl_draw(void)
{ {
static const GLfloat s_vertices[4][2] = { static const GLfloat s_vertices[4][2] = {
@ -542,3 +583,42 @@ void render_av_frames_egl(struct buffer* dst, struct vnc_av_frame** src,
pixman_region_clear(&dst->damage); pixman_region_clear(&dst->damage);
} }
void render_buffer_egl(struct buffer* dst, const struct buffer* src,
double scale, int x_pos, int y_pos)
{
struct fbo_info fbo;
fbo_from_gbm_bo(&fbo, dst->bo);
// Make sure we've completed drawing into the source buffer:
glFinish();
glBindFramebuffer(GL_FRAMEBUFFER, fbo.fbo);
struct pixman_box16* ext = pixman_region_extents(&dst->damage);
glScissor(ext->x1, ext->y1, ext->x2 - ext->x1, ext->y2 - ext->y1);
glEnable(GL_SCISSOR_TEST);
glUseProgram(shader_program_ext);
int width = round((double)src->width * scale);
int height = round((double)src->height * scale);
glViewport(x_pos, y_pos, width, height);
GLuint tex = texture_from_buffer(src);
glBindTexture(GL_TEXTURE_EXTERNAL_OES, tex);
gl_draw();
glBindTexture(GL_TEXTURE_EXTERNAL_OES, 0);
glDisable(GL_SCISSOR_TEST);
glFlush();
glBindFramebuffer(GL_FRAMEBUFFER, 0);
glDeleteFramebuffers(1, &fbo.fbo);
glDeleteRenderbuffers(1, &fbo.rbo);
pixman_region_clear(&dst->damage);
}